diff --git a/yii b/yii
index 32d11f7..81ab594 100755
--- a/yii
+++ b/yii
@@ -10,8 +10,9 @@
 
 defined('YII_DEBUG') or define('YII_DEBUG', true);
 
-// fcgi doesn't have STDIN defined by default
+// fcgi doesn't have STDIN and STDOUT defined by default
 defined('STDIN') or define('STDIN', fopen('php://stdin', 'r'));
+defined('STDIN') or define('STDOUT', fopen('php://stdout', 'w'));
 
 require(__DIR__ . '/vendor/autoload.php');
 require(__DIR__ . '/vendor/yiisoft/yii2/Yii.php');